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castortr0y [4]
3 years ago
8

This is the question: Write down the equation of a circle with centre (0,0) and radius 5.

Mathematics
1 answer:
ANTONII [103]3 years ago
3 0
You almost had it right! remember the equation of a circle is
(x - h)^2 + (y - k)^2 = r^2. the center is (h,k) and r is the radius.

(x - 0)^2 + (y - 0)^2 = 5^2

x^2 + y^2 = 25 <<< your answer

hope that helps, God bless!
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Solve for b.
AlekseyPX

Answer:

b=+-5\sqrt{C}

Step-by-step explanation:

C=b^2/25

25C=b^2

\sqrt{b^2}=+-\sqrt{25C}

b=+-5\sqrt{C}

8 0
3 years ago
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What is the percent of 16/25
Lelechka [254]
16/25 = 0.64 = 64%

Another way to do it is to multiply top and bottom by 4
16/25 = (16*4)/(25*4) = 64/100 = 64%

Either way, the answer is 64%
7 0
3 years ago
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What is the sum of three tenths plus thirty nine hundredths equals blank a thirty six hundredths b forty two hundredths c sixty
ad-work [718]

Answer:c- sixty nine hundredths

Step-by-step explanation:

three tenths can be expressed in decimal as 3/10

thirty nine hundredths can be expressed in decimal as 39/100

Therefore the sum of three tenths plus thirty nine hundredths equals

3/10 +39/100

We first find the l.c.m of the two fractions equals 100 so we have 100 as the denominator

then 100 divided by 10  multiplied by 3 +100 divided by 100 multiplied by 39 as illustrated below gives the answer

3/10 +39/100

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=69/100= sixty nine hundredths

3 0
3 years ago
Wilma is twice as old as Jamal, and Jamal is 3 years older than Tim. The sum of all their ages is 17.
oee [108]
<span>If x = Jamal's age , 2x = Wilma's age , x - 3 = Tim's age.
The sum of the ages is 17. 
Jamal's age is 5
Wilma's age is 10
Tim's age is 2

Hope this helps!</span>
4 0
3 years ago
One is 25% of what number
Sergio039 [100]

Answer:

5 i think

Step-by-step explanation:

what your asking is 5x5? so 25

4 0
3 years ago
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